I think most people would prefer buildings 3 and 5 for the combination of views, proximity to the small starbucks/deli and registration in building 1 and proximity to the pool area.
The newer buildings, 6 & 7, are farther removed from the other amenities. It's quieter over there. Being newer, they are probably in better shape. And, the walk to the pool is not really much of a burden, 5 minutes at most.
For me (with grown kids), buildings 2 and 4 are out. Only views of the pool.
Except for buildings 2 and 4, all the patios/balconies (brownish squares on the link Denise posted) face outward.
Kierland Villas is a great place to visit. I'll be there again 10-19 to 10-26. Enjoy your visit!